When considering the deplorable side of ethics, An act considered one of 'mortal sin' could be seen in most religious concepts, especially Christianity. It describes behaviors that most people feel simply cannot be tolerated inside any functioning society.
There are seven major categories of transgression in this pattern: pride, envy, an oversized appetite, lust or an untamed cock, anger and greed and sloth. At worst, these deeds are regarded as a break in the linkage between people and their faith which calls for confession and penance.